Frequency-specific abnormalities in regional homogeneity among children with attention deficit hyperactivity disorder: a resting-state fMRI study

Abstract

Although many functional magnetic resonance imaging (fMRI) studies have investigated the neurophysiology of attention deficit hyperactivity disorder (ADHD), the existing studies have not yielded consistent findings. This may be related to the different properties of different frequency bands. To investigate the frequency-specific regional homogeneity (ReHo) of spontaneous neural activities in ADHD, the current study used resting-state fMRI to explore the ReHo properties of five frequency bands, slow-5 (0.01–0.027 Hz), slow-4 (0.027–0.073 Hz), slow-3 (0.073–0.198 Hz), slow-2 (0.198–0.25 Hz) and the extra-low frequency (0–0.01 Hz), in 30 drug-naive boys with ADHD and 30 healthy controls. Compa..